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Alchen [17]
3 years ago
15

Please help Check answers

Mathematics
1 answer:
Law Incorporation [45]3 years ago
6 0

Answer:

Number 8 the answer is 120

Number 10 answer is 115

Step-by-step explanation:

8. 180-60=120

it's because the straight line is 180 then you just need to solve it use this

10. 180-65=115

the reason same like number 8

Hope this answer can help you to solve the math problems

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Find the general solution of the given second-order differential equation. y'' − y' − 20y = 0
USPshnik [31]
Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Y= 0, 21
6 0
4 years ago
Read 2 more answers
PLEASEE HELPPPP!!!!! ASAP SEE ATTACHED!
stiks02 [169]
Short answer: C
Let's start with the pen. 
The length is x
The width is 3 more.= x + 3 
Perimeter of the pen = 2L + 2W
P = 2 L + 2W
P = 2*x + 2(x + 3)
P = 2x + 2x + 6
P = 4x + 6. Leave that for now.

Area of the pen without the doghouse = x(x + 3)
Area of the pen without the doghouse = x^2 + 3x
Area with the doghouse x^2 + 3x - y = 178 (that's his running around space.

Go to the dog house for a Moment
The perimeter of the doghouse and the area are equal and we are told to make them both y.
Area = y
Perimeter = y

Combined facts.
The perimeter of the Pen is three times larger than that of the dog house.
4x + 6 = 3y

The area of the Pen - The area of the doghouse = 178
x^2 + 3x - y = 178

Now what happens is that you have to juggle these two equations so they look like your answer
x^2 + 3x - y = 178
4x + 6 = 3y  Subtract 3y from both sides.
4x - 3y + 6 = 0 Subtract 6 from both sides.
4x - 3y = - 6

Answer C
6 0
3 years ago
The radius of a circle is 4.2 m. Find the circumference to the nearest tenth.​
kifflom [539]
Answer is 26.4 hope this helped
3 0
3 years ago
Plz plz plz plz plz plz plz plz plz plz
Karo-lina-s [1.5K]
12 girls for every 5 boys
boys is second so it shouldb be indenomenaotr (bottom)

girls/boys

12girls/5boys=2.4girls/boy

answer is B

6 0
3 years ago
Read 2 more answers
Determine the equation of a line in standard form that represents alanas training progress. Her progress points corresponds to t
elixir [45]

Answer:

The equation of the line passing through the above points is:

y=-\frac{1}{2}x+\frac{29}{2}

Step-by-step explanation:

Given:

The two points are: (x_1,y_1)=(1,14)\textrm{ and }(x_2,y_2)=(9,10)

The equation of a line when two points are given is:

y-y_1=\left (\frac{y_2-y_1}{x_2-x_1} \right )(x-x_1)

Plug in all the values and simplify.

y-14=\left (\frac{10-14}{9-1} \right )(x-1)\\y-14=\left (\frac{-4}{8} \right )(x-1)\\y-14=-\frac{1}{2}(x-1)\\y-14=-\frac{1}{2}x+\frac{1}{2}\\y=-\frac{1}{2}x+\frac{1}{2}+14\\\\\\y=-\frac{1}{2}x+\frac{29}{2}

Therefore, the equation of the line passing through the above points is:

y=-\frac{1}{2}x+\frac{29}{2}

8 0
3 years ago
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